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2026-11-05 · 5 min read

How to Change a Spare Tyre — Step by Step

Knowing how to change a spare tyre is a basic skill every driver should have. Here's a clear step-by-step guide so you can do it safely on the roadside — and what to check about your spare before you need it.

How to Change a Spare Tyre — Step by Step

很多人从未自己换过备胎,但在高速公路上等几小时的道路援助和自己 20 分钟换完,差距很大。提前学好,备用。

出发前:先检查你的备胎

备胎气压:每次长途出发前检查备胎气压(通常在行李箱底部或车尾外挂)。很多人发现需要用备胎时才发现备胎也没气。

确认千斤顶和轮胎扳手在车里——通常在行李箱底部备胎旁边。

备胎类型:部分车辆配备「临时备胎」(Spare Tyre,尺寸较小)——这种只能低速行驶,换上后不能超过 80 km/h,且要尽快换回正常轮胎。

第一步:安全停车

把车移到平坦、稳固的地面,远离交通流。高速公路要移到紧急停车带。

打开双闪,在车后方 20 米放置三角警示牌。

拉上手刹,如果有轮胎楔(wheel wedge)放在对角轮胎下防止车子滚动。

第二步:松螺丝(在顶起之前)

在用千斤顶顶起车之前,先用扳手**逆时针**稍微松开每颗螺丝——不要完全拧开。

车还着地时松螺丝更容易,顶起后轮胎可能随扳手转动反而难松。

第三步:找千斤顶位置

千斤顶必须放在车身底盘的**指定支撑点**,通常是底盘边缘加强的金属槽。车主手册会有图示。

放错位置会撑坏车身,有些车型还会导致车子倒塌。

第四步:顶起车子,换轮胎

慢慢顶起直到漏气的轮胎离地约 5–8 cm。

完全拧下所有螺丝,取出坏胎,装上备胎。

用手先交叉拧紧螺丝(先拧对角,再拧其余),确保轮胎贴合均匀。

第五步:降下、最终紧固

慢慢降下千斤顶,轮胎着地后,用扳手按交叉顺序最终拧紧所有螺丝。

检查备胎气压,确认正常后才可以继续行驶。

如果是临时备胎,限速 80 km/h,尽快到 4M CARCARE 或修车店换回正常轮胎并修补原轮胎。

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